preliminary commit

Author: ziggie1984

graph/db/kv_store.go

@@ -3431,11 +3431,10 @@ func (c *KVStore) fetchLightningNode(tx kvdb.RTx,
 	return node, nil
 }
 
-// HasLightningNode determines if the graph has a vertex identified by the
-// target node identity public key. If the node exists in the database, a
-// timestamp of when the data for the node was lasted updated is returned along
-// with a true boolean. Otherwise, an empty time.Time is returned with a false
-// boolean.
+// HasNode determines if the graph has a vertex identified by the target node
+// identity public key. If the node exists in the database, a timestamp of when
+// the data for the node was lasted updated is returned along with a true
+// boolean. Otherwise, an empty time.Time is returned with a false boolean.
 func (c *KVStore) HasNode(_ context.Context,
 	nodePub [33]byte) (time.Time, bool, error) {
 

lnrpc/routerrpc/router_backend.go

@@ -64,6 +64,10 @@ type RouterBackend struct {
 	FetchChannelEndpoints func(chanID uint64) (route.Vertex,
 		route.Vertex, error)
 
+	// HasNode returns true if the node exists in the graph (i.e., has
+	// public channels), false otherwise.
+	HasNode func(nodePub route.Vertex) (bool, error)
+
 	// FindRoute is a closure that abstracts away how we locate/query for
 	// routes.
 	FindRoute func(*routing.RouteRequest) (*route.Route, float64, error)